:) It's good to know you're getting what you need. If you every upgrade to larger tanks, you might want to consider buying something like Prime conditioner. It only uses 2 drops per gallon, so it lasts a long time.
IMO, in a one gallon you should do maybe 2-3 100% water changes a week seeing as ammonia builds up quickly. Keep an eye on those fake plants, plastic plants often times rip betta's fins. As for heaters, you get what you pay for. I would go ahead and invest in good quality heaters, I know Marineland insures that its heaters will literally last a life time. If they break, you contact them and they'll mail you a new one. They're a bit on the expensive side (20 ish dollars) but seeing as your bettas could possibly live to about 5 years of age (and you might become addicted to bettas XD ), you'll need something that'll last long enough.
Last edited by JKfish; 01-29-2011 at 10:37 PM.